mp_setoverridepath(3mpapi) [opensolaris man page]

MP_SetOverridePath(3MPAPI)			   Common Multipath Management Library Functions			MP_SetOverridePath(3MPAPI)

NAME

       MP_SetOverridePath - manually override a logical unit path

SYNOPSIS

       cc [ flag... ] file... -lMPAPI [ library... ]
       #include <mpapi.h>

       MP_STATUS MP_SetOverridePath(MP_OID logicalUnitOid,
	    MP_OID pathOid);

PARAMETERS

       logicalUnitOid	 The object ID of the multipath logical unit.

       pathOid		 The object ID of the path logical unit.

DESCRIPTION

       The MP_SetOverridePath() function is used to manually override the path for a logical unit. The path is exclusively used to access the log-
       ical unit until cleared. Use MP_CancelOverride to clear the override.

       This API allows the administrator to disable the dri ver's load balance algorithm and force all I/O operations  to  a  specific	path.  The
       existing  path  weight configuration is maintained. If the administrator undoes the override (by calling MP_CancelOverridePath), the driver
       starts load balancing based  on the weights of available paths (and target port group access state for asymmetric devices).

       If the multipath logical unit is part of a target with asymmetrical access, executing this command could cause failover.

RETURN VALUES

       MP_STATUS_INVALID_OBJECT_TYPE

	   The logicalUnitOid or pathOid does not specify any valid object type. This is most likely to happen if an uninitialized  object  ID	is
	   passed to the API.

       MP_STATUS_INVALID_PARAMETER

	   The	logicalUnitOid	has  a	type  subfield	other  than  MP_OBJECT_TYPE_MULTIPATH_LU,  or  if  pathOid  has  an object type other than
	   MP_OBJECT_TYPE_PATH_LU.

       MP_STATUS_OBJECT_NOT_FOUND

	   The logicalUnitOid, pathOid owner ID, or object sequence number is invalid.

       MP_STATUS_SUCCESS

	   The operation is successful.

       MP_STATUS_UNSUPPORTED

	   The implementation does not support the API.

       MP_STATUS_PATH_NONOPERATIONAL

	   The driver cannot communicate through selected path

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard: ANSI  INCITS  412  |
       |			     |Multipath Management API	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       libMPAPI(3LIB), attributes(5)

       Multipath Management API Version 1.0

SunOS 5.11							    15 Feb 2006 					MP_SetOverridePath(3MPAPI)

Check Out this Related Man Page

MP_SetLogicalUnitLoadBalanceType(3MPAPI)	   Common Multipath Management Library Functions	  MP_SetLogicalUnitLoadBalanceType(3MPAPI)

NAME

       MP_SetLogicalUnitLoadBalanceType - set a load balancing policy

SYNOPSIS

       cc [ flag... ] file... -lMPAPI [ library... ]
       #include <mpapi.h>

       MP_STATUS MP_SetLogicalUnitLoadBalanceType(MP_OID logicalUnitoid,
	    MP_LOAD_BALANCE_TYPE  loadBalance);

PARAMETERS

       logicalUnitOid	 The object ID of the multipath logical unit.

       loadBalance	 The desired load balance policy for the specified logical unit.

DESCRIPTION

       The  MP_SetLogicalUnitLoadBalanceType()	function sets the multipath logical unit's load balancing policy. The value must correspond to one
       of the supported values in MP_PLUGIN_PROPERTIES.SupportedLogicalUnitLoadBalanceTypes.

RETURN VALUES

       MP_STATUS_INVALID_OBJECT_TYPE

	   The logicalUnitOid does not specify any valid object type. This is most likely to happen if an uninitialized object ID is passed to the
	   API.

       MP_STATUS_INVALID_PARAMETER

	   The loadBalance is invalid or logicalUnitOid has a type subfield other than MP_OBJECT_TYPE_MULTIPATH_LU.

       MP_STATUS_OBJECT_NOT_FOUND

	   The logicalUnitOid owner ID or object sequence number is invalid.

       MP_STATUS_SUCCESS

	   The operation is successful.

       MP_STATUS_FAILED

	   The	specified  loadBalance	type  cannot  be  handled  by  the  plugin.  One possible reason for this is a request to set MP_LOAD_BAL-
	   ANCE_TYPE_PRODUCT when the specified logical unit has no corresponding MP_DEVICE_PRODUCT_PROPERTIES instance (i.e., the plugin does not
	   have a product-specific load balance algorithm for the LU product).

       MP_STATUS_UNSUPPORTED

	   The implementation does not support the API.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard:  ANSI  INCITS 412  |
       |			     |Multipath Management API	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       libMPAPI(3LIB), attributes(5)

       Multipath Management API Version 1.0

SunOS 5.11							    15 Feb 2006 			  MP_SetLogicalUnitLoadBalanceType(3MPAPI)

Linux and UNIX Man Pages

mp_setoverridepath(3mpapi) [opensolaris man page]

Check Out this Related Man Page